;(function () {
    let myChart = echarts.init(document.querySelector(".box-r2"));
    let option = {
        legend: {
          top: 'bottom'
        },
        toolbox: {
          show: true,
          feature: {
            mark: { show: true },
            dataView: { show: true, readOnly: false },
            restore: { show: true },
            saveAsImage: { show: true }
          }
        },
        series: [
          {
            name: 'Nightingale Chart',
            type: 'pie',
            radius: [10, 90],
            center: ['50%', '50%'],
            roseType: 'area',
            itemStyle: {
              borderRadius: 8
            },
            data: [
              { value: 40, name: ' 1' },
              { value: 38, name: '2' },
              { value: 32, name: ' 3' },
              { value: 30, name: ' 4' },
              { value: 28, name: ' 5' },
              { value: 26, name: ' 6' },
              { value: 22, name: ' 7' },
              { value: 18, name: ' 8' }
            ]
          }
        ]
      };
      myChart.setOption(option);
    //缩放改变大小
    window.addEventListener("resize", () => {
      myChart.resize();
    });
  })();